🧑‍💻 Remove unused servo fields

Marlin/src/HAL/TEENSY31_32/Servo.h

@@ -31,7 +31,5 @@ class libServo : public Servo {
     void move(const int value);
   private:
     typedef Servo super;
-    uint16_t min_ticks;
-    uint16_t max_ticks;
     uint8_t servoIndex;               // index into the channel data for this servo
 };

Marlin/src/HAL/TEENSY35_36/Servo.h

@@ -35,7 +35,5 @@ class libServo : public Servo {
     void move(const int value);
   private:
     typedef Servo super;
-    uint16_t min_ticks;
-    uint16_t max_ticks;
     uint8_t servoIndex; // Index into the channel data for this servo
 };

Marlin/src/HAL/TEENSY40_41/Servo.h

@@ -37,7 +37,5 @@ class libServo : public PWMServo {
   private:
     typedef PWMServo super;
     uint8_t servoPin;
-    uint16_t min_ticks;
-    uint16_t max_ticks;
     uint8_t servoIndex; // Index into the channel data for this servo
 };